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无线通信 S参数的设计与应用
Agilent AN 154 S-Parameter Design Application Note S参数的设计与应用
The need for new high-frequency, solid-state circuitdesign techniques has been recognized both by microwaveengineers and circuit designers. These engineersare being asked to design solid state circuitsthat will operate at higher an ...
技术资料 基于单片机的数字电能表的设计原理
本次设计的主要内容是了解数字电能表基本原理,并设计出一个基于STC89C51单片机的数字电能表。设计的主要思路与内容如下:采用STC89C51单片机完成电能表分时与计费功能,用电流互感器与电阻分压来实现电流电压的采样;收集到的模拟的数据再用ADC0832就可以让单片机读懂反馈回来的数字信息;最后将得到的结果信息显示在LCD1602显 ...
PCB相关 pci e PCB设计规范
This document provides practical, common guidelines for incorporating PCI Express interconnect
layouts onto Printed Circuit Boards (PCB) ranging from 4-layer desktop baseboard designs to 10-
layer or more server baseboard designs. Guidelines and constraints in this document are intended
for use on b ...
可编程逻辑 pci e PCB设计规范
This document provides practical, common guidelines for incorporating PCI Express interconnect
layouts onto Printed Circuit Boards (PCB) ranging from 4-layer desktop baseboard designs to 10-
layer or more server baseboard designs. Guidelines and constraints in this document are intended
for use on b ...
单片机编程 基于CH341A的USB串口通讯设计
为解决当前计算机串行通讯接口只有USB，难以满足旧型号设备或某些单片机要求RS232通讯的问题，设计出两款RS232/USB电路。采用CH341A与MAX223集成电路芯片构建标准9线RS232/USB通用接口转换器，无需编程。采用CH341A与PIC16F877A构建单片机与计算机之间的USB通讯电路，软件遵循RS232通讯协议，硬件进行电平转换。实际使用表 ...
接口技术 net_tcp.h
/*
*********************************************************************************************************
*                                             uC/TCP-IP V2
*       ...